I had everything stable myself with GPU at 250 but if you go in Lotro large raid in Helegrod it will start acting up (artifacting or weird stretching of images). So even though all other games run perfect there is issue here. Only with that particle location. So nothing is definite.

No mods. Just a regular install of Crysis with the latest patch. The config ini was default. You can see the settings I used by loading the bench screens.

One important note to the latest benches I added. I am going back and reducing Lost Planet all DX10 results in post 2. Even when you run DX 10 there are four settings that can be manually bumped from high to "DX10". I missed one of them.

For the record the options that can be moved from high to DX10 on the DX10 path (or turned on in some cases) in Lost Planet are; Shadow Quality, Motion Blur, Filter Quality, and Fur Quality. Fur Quality is actually in one of two positions; off or DX10.

EDIT-

All DX 10 all tests for Lost Planet in post 2 have been updated with appropriate screen caps and numbers.